<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>

</head>
<body>
    <script>
        import * as rectplus from './rectPlus.js'
        console.log(rectplus.area(3,5));//继承自父模块
        console.log(rectplus.pi);
        
        import perim from './rectPlus.js';//rectPlus模块默认方法
        console.log(perim(4,6));
    </script>
    
</body>
</html>